Sony KDL-32R435A / KDL-40R485A / KDL-46R485A Service Manual ▷ View online
KDL-32R435A/40R485A/46R485A 5
SECTION 2 - TROUBLESHOOTING
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
1. Confirm the symptom from the customer.
Red Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart.
Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
Power
Audio
2X 3X
6X
Dead set
No
Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No Audio
MAIN BOARD
▲
▲
POWER SUPPLY
LCD PANEL
TCON
▲
▲
Video
Protection Modes
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board
*NOTE: REFER TO LCD PANEL SERVICE MANUAL IN REFERENCE LIBRARY DATABASE
FOR CORRECT REPLACEMENT PARTS BASED ON SERIAL NUMBER.
KDL-32R435A/40R485A/46R485A 6
SECTION 2 - TROUBLESHOOTING
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
Component/Composite
RF
HDMI 1
AC ADAPTER
SWITCH
UNIT
LED
IR RX
LCD PANEL, TCON, &
LED BACKLIGHTS
BB
HB
L
R
OPTICAL AUDIO OUT
MT5389
A/V DECODER
A/V PROCESS
TUNER
USB 1
HDMI 2
LVDS
AC IN
CLASS D
AUDIO
AMP
Audio L/R In
KDL-32R435A/40R485A/46R485A 7
SECTION 2 - TROUBLESHOOTING
STANDBY LED BLINKING FLOWCHART
Protect
Shutdown.
Standby LED
Blinking
No
Yes
Yes
Yes
2X
Main Board*
3X
No
6X
Power Supply Board*
“SONY” logo
appears before
shutdown?
Yes
No
LCD Panel*
Power Supply Board*
KDL-32R435A/40R485A/46R485A 8
SECTION 2 - TROUBLESHOOTING
VIDEO DISTORTION FLOWCHART
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper of
missing colors?
Yes
Main Board*
No
Vertical lines
or bars?
No
Yes
Lines move
when wide-mode
changed?
Yes
No
LCD Panel*
Main Board*
LCD Panel*
Any single or
isolated vertical
lines?
Yes
LCD Panel*
More than 1
vertical band?
No
Yes
LCD Panel
Uneven
brightness?
LCD Panel*
Yes
*For Part Number information, refer to
“Section 4 - Exploded View/Part Number Information” on page 16
.
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